Novel compositions suitable for treating deep wells

Details Novel compositions suitable for treating deep wells Novel compositions suitable for treating deep wells

1986-02-18

1987-10-20

Guynn, Herbert B.

Compositions

Leather or fur treating

166308, 528405, 558265, E21B 4326

Patent

active

047012706

ABSTRACT:
A viscosity-increased liquid carbon dioxide fracturing fluid is provided for the treatment of subterranean gas-bearing formations. The composition comprises liquid carbon dioxide which has been thickened by the addition of a small amount of a copolymer which is the reaction product of liquid carbon dioxide and an alkene oxide, preferably propylene oxide. The use of the copolymer thickener provides a CO.sub.2 fracturing fluid which may be pumped at a high rate, will not readily boil or foam, will carry a propping agent and will completely degrade within the formation.

REFERENCES:
patent: 3664422 (1972-05-01), Bullen
patent: 3765488 (1973-10-01), Pence
patent: 3842910 (1974-10-01), Zingg et al.
patent: 3953383 (1976-04-01), Inoue et al.
patent: 3954626 (1976-05-01), Greminger et al.
patent: 4166898 (1979-09-01), Kambe et al.
patent: 4500704 (1985-02-01), Kruper et al.

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